CN101931736A - Processing method and system of video picture black borders - Google Patents
Processing method and system of video picture black borders Download PDFInfo
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- CN101931736A CN101931736A CN2009100437101A CN200910043710A CN101931736A CN 101931736 A CN101931736 A CN 101931736A CN 2009100437101 A CN2009100437101 A CN 2009100437101A CN 200910043710 A CN200910043710 A CN 200910043710A CN 101931736 A CN101931736 A CN 101931736A
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Abstract
The invention discloses a processing method and a system of video picture black borders, enabling the picture of a video signal to be displayed on a display screen at a state of no deformation and black borders. The method regenerates picture necessarily displayed in the black borders according to the existing original video signal picture so as to achieve the effect of eliminating the black borders when the display ratio of the video signal is converted in a letter box mode.
Description
Technical field
The present invention relates to the Display Technique field, specifically, relate to when using letter box (mailbox) mode treatment or broadcast video signal the technical method of large area flicker reduction of video pictures black surround and system.
Background technology
At present, how each novel display system has been designed to length-width ratio is 16: 9 widescreen picture, to represent the general effect of similar movie screen, also is the golden ratio that meets human visual most simultaneously, has the best broad visual field, and better visual effect is provided.
Main media " TV " with the amusement and recreation of general family, promptly be to form so-called wide screen television, it is 4: 3 picture that but present many vision signals still belong to traditional length-width ratio, since different with the display screen length-width ratio of present new-type wide screen television, so this panavision itself tends to adopt following dual mode to separate:
(1), letter box (mailbox) pattern: this mode has kept the original aspect ratio of 4:3 vision signal, and makes the both sides blank space of tv display screen fill out black value.Yet the method can make black surround of each side appearance of display screen, promptly as shown in Figure 1, receives the shown picture view that goes out of traditional 4:3 vision signal for wide screen television utilizes Letter box.
(2), pan and pan (full frame) pattern: this mode changes the original aspect ratio of 4:3 vision signal, so that tv display screen can be filled up by video pictures entirely.Yet the method can make obvious distortion of picture displayed and distortion, promptly as shown in Figure 2, receives the shown picture view that goes out of traditional 4:3 vision signal for wide screen television adopts the full frame pattern.
And when watching vision signal to be the picture of 4:3, no matter be to adopt the both sides of aforesaid Letter box to stay the distortion of black surround or full frame pattern, on visual effect, all can't make most users satisfied.Along with popularizing of wide screen television, run into this problem with having more and more many users, therefore, provide a kind of this kind of solution visually uncomfortable technology, seem most important.
Summary of the invention
The black surround and the metamorphopsic distortion that the objective of the invention is to avoid the displaying ratio rear video picture of converting video signal to occur, and a kind of processing method and system of video picture black borders are provided.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of processing method of video picture black borders is in order to use letter box (mailbox) mode playback video pictures.
Aforementioned processing method concrete steps comprise:
A, receiving video signals;
B, vision signal is removed black surround handle;
C, transmission processed video signal.
The aforementioned processing method, wherein the vision signal described in the step a has a displaying ratio, and different with the target displaying ratio.
The aforementioned processing method, wherein the described method of step b comprises: it is according to original video picture regeneration black surround scope planted agent picture displayed, and to picture displayed in the black surround scope make to comprise fuzzy, gradual change, change color range, the visual effect that changes brightness handles.
The aforementioned processing method, the black surround scope of wherein regenerating planted agent picture displayed refers to: intercept from original video picture one zone.
The aforementioned processing method, the picture that from original video picture one zone, intercepts, with the length-width ratio of black surround or area not simultaneously, adjust the length and the width of this picture, so that its length-width ratio is identical with black surround with area, and adopt the method that comprises flip horizontal, flip vertical to handle to this picture; When its length-width ratio with black surround is all identical with area, adopt the method that comprises flip horizontal, flip vertical to handle to this picture.
The aforementioned processing method, wherein said regeneration black surround scope planted agent picture displayed refers to again: black surround scope planted agent picture displayed adopts solid color, and its picture is all identical with the length-width ratio and the area of black surround, and its color intercepts from original video picture one zone.
The aforementioned processing method, wherein color intercepts from original video picture one zone and comprises, and its color is according to all or partly the calculating of color of pixel value is definite in the regeneration picture capturing zone.
The aforementioned processing method, wherein the described processed video signal of step c refers to: the vision signal after this conversion has the target displaying ratio, and the video pictures that shows comprises original video picture and the regeneration picture after visual effect is handled and play by Letter box in positional alignment.
For achieving the above object, the present invention has also announced a kind of treatment system of video picture black borders, and in order to use letter box (mailbox) mode playback video pictures, this system mainly comprises:
One receiving element is in order to receiving video signals;
One detecting unit is in order to detect the demonstration specification of this vision signal; And
One comparing unit, demonstration specification and the target detected in order to the comparison detecting unit show specification, and then definite black surround zone; And
One interception unit in order to intercepting black surround zone planted agent's picture displayed or color from original video picture one zone, and is determined regeneration picture capturing zone; And
One effect process unit carries out effect process in order to the picture to intercepting; And
One merge cells in order to according to original video picture and the regeneration picture after the effect process cell processing, is combined into and generates the vision signal with target displaying ratio by the positional alignment in the Letter box broadcast;
One delivery unit is in order to transmit the vision signal that merge cells generated.
The aforementioned processing system, wherein the vision signal of receiving element reception has a displaying ratio, and different with the target displaying ratio.
The aforementioned processing system, when interception unit wherein from the original video picture during capturing picture, regeneration picture capturing zone comprises:
The regeneration picture capturing zone that interception unit is determined and definite black surround zone, contrast unit, length-width ratio or area difference;
The regeneration picture capturing zone that interception unit is determined and definite black surround zone, contrast unit, length-width ratio is identical with area.
The aforementioned processing system, the black surround zone determined of the regeneration picture capturing zone determined of interception unit and contrast unit wherein, length-width ratio or area are not simultaneously, length and width are adjusted to the picture of interception unit intercepting in the effect process unit, so that its length-width ratio is identical with the black surround zone with area, and adopt the method that comprises flip horizontal, flip vertical to handle to this picture; The regeneration picture capturing zone that interception unit is determined and definite black surround zone, contrast unit, when length-width ratio was identical with area, the effect process unit adopted the method that comprises flip horizontal, flip vertical to handle to the picture of this intercepting.
The aforementioned processing system, when wherein interception unit only intercepts color from original video picture one zone, regeneration picture capturing zone is arbitrary zone in the original video picture, the black surround scope planted agent picture displayed of regeneration adopts solid color, the effect process unit confirms that its picture is all identical with the length-width ratio and the area in black surround zone, and its color is calculated definite by the effect process unit according to the whole of interception unit intercepting or part color of pixel value.
The aforementioned processing system, wherein the effect process unit also comprise to picture displayed in the black surround scope make to comprise fuzzy, gradual change, change color range, the visual effect that changes brightness handles.
The present invention overcomes the deficiencies in the prior art, employing is according to the picture in the content regeneration black surround of current raw video signal picture, to eliminate the black surround that occurs on the display screen, in the length-width ratio that does not change the raw video signal picture is under the indeformable prerequisite of picture, obtained wider viewable pictures, give a kind of new visual experience of user, improve the visual enjoyment of viewing and admiring.
Description of drawings
Fig. 1 receives the shown picture view that goes out of traditional 4:3 vision signal for wide screen television adopts Letter box;
Fig. 2 receives the shown picture view that goes out of traditional 4:3 vision signal for wide screen television adopts the full frame pattern;
Fig. 3 is an embodiment of the invention method flow diagram;
Fig. 4 is each area schematic of embodiment of the invention video pictures;
Fig. 5 is an embodiment of the invention system architecture schematic diagram;
11: receiving video signals 12: vision signal is removed black surround handle
13: transmit processed video signal 20:16:9 and show the specification video pictures
21: original video picture area 22: the black surround zone
23: regeneration picture capturing zone 31: receiving element
32: detecting unit 33: comparing unit
34: interception unit 35: the effect process unit
36: merge cells 37: delivery unit
Embodiment
Basic principle of the present invention is according to the content of current raw video signal picture regeneration black surround planted agent picture displayed, with the displaying ratio of Letter box converting video signal the time, reaches the effect of eliminating black surround.
Be elaborated below in conjunction with embodiment and accompanying drawing.
Present embodiment has the vision signal that a 4:3 shows specification for adopting method and system of the present invention to show on the display system with a 16:9 specification display screens.
The display packing flow chart of present embodiment as shown in Figure 3.Earlier by this display system receiving video signals 11; By this system this vision signal is made to remove black surround subsequently and handle 12; Transmit the processed video signal afterwards.
Display system in the present embodiment comprises as the system architecture schematic diagram shown in Figure 5: receiving element 31, detecting unit 32, comparing unit 33, interception unit 34, effect process unit 35, merge cells 36, delivery unit 37.
Existing coupling system framework is done detailed explanation to above method flow respectively.
Receiving video signals 11.This method flow is realized by receiving element 31 receiving video signals.This display system of hypothesis has a display screen in the present embodiment, and this display screen has the demonstration specification of 16:9, and the vision signal of intending receiving has the demonstration specification of 4:3.Cause because of the demonstration of display screen and vision signal is diversified in specifications, therefore need the demonstration specification of this vision signal is handled to adapt to display screen.
Vision signal is removed black surround handle 12.This method step is by detecting unit 32, comparing unit 33, interception unit 34, and effect process unit 35, merge cells 36 are realized.Detecting unit 32 is in order to detect the demonstration specification of this vision signal, demonstration specification and target that comparing unit 33 is detected in order to comparison detecting unit 32 show specification, and then definite black surround zone, interception unit 34 is in order to intercepting black surround zone planted agent's picture displayed or color from original video picture one zone, and definite regeneration picture capturing zone, effect process unit 35 carries out effect process in order to the picture to intercepting, merge cells 36 is combined into and generates the vision signal with target displaying ratio in order to according to original video picture and the regeneration picture after effect process unit 35 is handled by the positional alignment in the Letter box broadcast.
It is shown in Figure 4 to see also each area schematic of embodiment of the invention video pictures, shows specification video pictures 20, original video picture area 21, black surround zone 22, regeneration picture capturing zone 23 comprising 16:9.And
X1:Y＝16:9
X2:Y＝4:3
X3＝(X1-X2)/2
It is X2:Y that detecting unit 32 detects the vision signal that receiving element 31 received; The vision signal that comparing unit 33 is confirmed according to receiving element 31 shows that specification X2:Y and target show specification X1:Y, and the length-width ratio of determining black surround zone 22 is X3: Y, and area is X3*Y; Interception unit 34 is intercepting black surround zone 22 planted agent's picture displayed or colors from raw video signal picture 21 1 zones that receiving element 31 receives, and determine regeneration picture capturing zone 23.
(1) when interception unit 34 from raw video signal picture 21 1 zones that receiving element 31 receives during capturing picture:
(1) the black surround zone 22 determined of regeneration picture capturing zone 23 and contrast unit 33, length-width ratio or area difference, that is:
The length-width ratio and the area in regeneration picture capturing zone 23 are respectively X4: Y1, X4*Y1,
X4: Y1 ≠ X3: Y or X4*Y1 ≠ X3*Y;
The picture of the 35 pairs of interception unit in effect process unit, 34 interceptings is adjusted length and width, so that its length-width ratio is identical with black surround zone 22 with area, and adopts the method that comprises flip horizontal, flip vertical to handle to this picture.
(2) the black surround zone 22 determined of regeneration picture capturing zone 23 and contrast unit 33, length-width ratio is identical with area, that is:
The length-width ratio and the area in regeneration picture capturing zone 23 are respectively X4: Y, X4*Y, and X3=X4,
X4: Y=X3: Y and X4*Y=X3*Y;
The picture of the 35 pairs of interception unit in effect process unit, 34 interceptings adopts the method that comprises flip horizontal, flip vertical to handle.
(2) when interception unit 34 only intercepts color from raw video signal picture 21 1 zones that receiving element 31 receives: regeneration picture capturing zone is arbitrary zone in the original video picture, the black surround scope planted agent picture displayed of regeneration adopts solid color, effect process unit 35 confirms that its picture is all identical with the length-width ratio and the area in black surround zone 22, and its color is calculated according to whole in the regeneration picture capturing zone 23 or part color of pixel value by effect process unit 35 and determined.In the present embodiment, the color value of the solid color picture that shows as the black surround scope planted agent of regeneration, for adopting the pixel in every interval to intercept a color of pixel value in regeneration picture capturing zone 23, the color value to all interceptings averages Calculation Method calculating then, then
Wherein m represents whole pixel quantities in the regeneration picture capturing zone 23, the pixel quantity of n representative intercepting,
Wherein R, G, B represent red value, green value, the blue valve of each pixel respectively, and its scope is the 0-255 interval, ∑ (R
1+ R
2+ ... R
n), ∑ (G
1+ G
2+ ... G
n), ∑ (B
1+ B
2+ ... B
n) redness, green, the blue valve summation of all pixels of representative intercepting respectively, R
0, G
0, B
0Represent the red, green, blue colour of regeneration picture respectively.
Can get thus, each color of pixel value of solid color picture that the black surround scope planted agent of regeneration shows is (R
0, G
0, B
0).
Coordinate mutually for reaching with the visual effect of original video picture 21, wherein effect process unit 35 comprises that also picture after its above-mentioned steps handled further makes to comprise fuzzy, gradual change, change color range, the visual effect that changes brightness is handled.In actual applications, above-mentioned 4 kinds of visual effect processing methods not necessarily need all to use, can select wherein a kind of earlier or in conjunction with several method to reach the purpose of coordinating mutually with picture.
Merge cells 36 is combined into and generates the vision signal with target displaying ratio in order to according to original video picture 21 and the regeneration picture after effect process unit 35 is handled by the positional alignment in the Letter box broadcast.
Transmit processed video signal 13.This method flow is realized that by delivery unit 37 vision signal that delivery unit 37 generates merge cells 36 is sent to the display screen of display system.
Present embodiment has been enumerated content and each step of using the inventive method and system.In the practical application, for the regeneration picture in the black surround zone, computational methods, the effect processing method of its intercepting content (promptly selecting capturing picture or selection intercepting color), intercepting zone, color value can be pre-if select to determine according to user's operational order in system according to actual needs.
The above only is preferred embodiments of the present invention, and is not that the present invention is done any type of restriction., all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (10)
1. the processing method of a video picture black borders in order to use letter box (mailbox) mode playback video pictures, is characterized in that it may further comprise the steps:
A, receiving video signals, wherein said vision signal has a displaying ratio, and different with the target displaying ratio;
B, vision signal is removed black surround handle;
C, transmission processed video signal, wherein the processed video signal refers to: the vision signal after this conversion has the target displaying ratio, and the video pictures that shows comprises original video picture and the regeneration picture after visual effect is handled and play by Letter box in positional alignment.
2. according to claim 1, it is characterized in that wherein the described method of step b comprises: it is according to original video picture regeneration black surround scope planted agent picture displayed, and to the regeneration picture make to comprise fuzzy, gradual change, change color range, the visual effect that changes brightness handles.
3. method according to claim 2, the black surround scope planted agent picture displayed that it is characterized in that wherein regenerating refers to: intercept from original video picture one zone.
4. method according to claim 3 is characterized in that:
The picture that from original video picture one zone, intercepts, with the length-width ratio of black surround or area not simultaneously, adjust the length and the width of this picture,, and adopt the method that comprises flip horizontal, flip vertical to handle this picture so that its length-width ratio is identical with black surround with area; When its length-width ratio with black surround is all identical with area, adopt the method that comprises flip horizontal, flip vertical to handle to this picture.
5. method according to claim 2, it is characterized in that wherein said regeneration black surround scope planted agent picture displayed refers to again: black surround scope planted agent picture displayed adopts solid color, its picture is all identical with the length-width ratio and the area of black surround, its color intercepts from original video picture one zone, color intercepts from original video picture one zone and comprises, its color is according to all or partly the calculating of color of pixel value is definite in the regeneration picture capturing zone.
6. the treatment system of a video picture black borders in order to use letter box (mailbox) mode playback video pictures, is characterized in that it mainly comprises:
One receiving element, in order to receiving video signals, wherein vision signal has a displaying ratio, and different with the target displaying ratio;
One detecting unit is in order to detect the demonstration specification of this vision signal; And
One comparing unit, demonstration specification and the target detected in order to the comparison detecting unit show specification, and then definite black surround zone; And
One interception unit in order to intercepting black surround zone planted agent's picture displayed or color from original video picture one zone, and is determined regeneration picture capturing zone; And
One effect process unit carries out effect process in order to the picture to intercepting; And
One merge cells in order to according to original video picture and the regeneration picture after the effect process cell processing, is combined into and generates the vision signal with target displaying ratio by the positional alignment in the Letter box broadcast;
One delivery unit is in order to transmit the vision signal that merge cells generated.
7. system according to claim 6 is characterized in that wherein interception unit from the original video picture during capturing picture, and regeneration picture capturing zone comprises:
The regeneration picture capturing zone that interception unit is determined and definite black surround zone, contrast unit, length-width ratio or area difference;
The regeneration picture capturing zone that interception unit is determined and definite black surround zone, contrast unit, length-width ratio is identical with area.
8. system according to claim 7, it is characterized in that the wherein definite regeneration picture capturing zone and definite black surround zone, contrast unit of interception unit, length-width ratio or area are not simultaneously, length and width are adjusted to the picture of interception unit intercepting in the effect process unit, so that its length-width ratio is identical with the black surround zone with area, and adopt the method that comprises flip horizontal, flip vertical to handle to this picture; The regeneration picture capturing zone that interception unit is determined and definite black surround zone, contrast unit, when length-width ratio was identical with area, the effect process unit adopted the method that comprises flip horizontal, flip vertical to handle to the picture of this intercepting.
9. system according to claim 6, when it is characterized in that wherein interception unit only intercepts color from the original video picture, regeneration picture capturing zone is arbitrary zone in the original video picture, the black surround scope planted agent picture displayed of regeneration adopts solid color, the effect process unit confirms that its picture is all identical with the length-width ratio and the area in black surround zone, and its color is calculated definite by the effect process unit according to the whole of interception unit intercepting or part color of pixel value.
10. system according to claim 6, it is characterized in that effect process unit wherein also comprise to picture displayed in the black surround scope make to comprise fuzzy, gradual change, change color range, the visual effect that changes brightness handles.
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| CN108597469A (en) * | 2018-04-28 | 2018-09-28 | 京东方科技集团股份有限公司 | A kind of method, display device and detection device for eliminating black surround |
| CN113508602A (en) * | 2019-05-01 | 2021-10-15 | 谷歌有限责任公司 | Biased lighting effect generation for video |
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Application publication date: 20101229 |